Definition of accessory before the fact Accessory before the fact

We found 2 definitions of accessory before the fact from 2 different sources.

What does accessory before the fact mean?

Noun
accessory before the fact - a person who procures or advises or commands the commission of a felony but who is not present at its perpetration

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accessory before the fact (Noun)
One who commands or counsels an offense, not being present at its commission.

accessory before the fact in sign language